US5220958A - Arrangement for driving out of volatile impurities from ground water - Google Patents
Arrangement for driving out of volatile impurities from ground water Download PDFInfo
- Publication number
- US5220958A US5220958A US07/746,101 US74610191A US5220958A US 5220958 A US5220958 A US 5220958A US 74610191 A US74610191 A US 74610191A US 5220958 A US5220958 A US 5220958A
- Authority
- US
- United States
- Prior art keywords
- ground water
- well shaft
- ground
- shaft
- arrangement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000003673 groundwater Substances 0.000 title claims abstract description 54
- 239000012535 impurity Substances 0.000 title claims abstract description 16
- 230000009471 action Effects 0.000 claims abstract description 7
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 238000012856 packing Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000009751 slip forming Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 10
- 238000010276 construction Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/002—Reclamation of contaminated soil involving in-situ ground water treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0205—Separation of non-miscible liquids by gas bubbles or moving solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0005—Degasification of liquids with one or more auxiliary substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/082—Screens comprising porous materials, e.g. prepacked screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fluid Mechanics (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Water Supply & Treatment (AREA)
- Dispersion Chemistry (AREA)
- Soil Sciences (AREA)
- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Degasification And Air Bubble Elimination (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4027304A DE4027304C2 (de) | 1990-08-29 | 1990-08-29 | Anordnung zum Austreiben leichtflüchtiger Verunreinigungen aus dem Grundwasser |
DE4027304 | 1990-08-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
US5220958A true US5220958A (en) | 1993-06-22 |
Family
ID=6413150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/746,101 Expired - Fee Related US5220958A (en) | 1990-08-29 | 1991-08-15 | Arrangement for driving out of volatile impurities from ground water |
Country Status (6)
Country | Link |
---|---|
US (1) | US5220958A (de) |
EP (1) | EP0472967B1 (de) |
AT (1) | ATE111786T1 (de) |
CA (1) | CA2049870C (de) |
DE (2) | DE4027304C2 (de) |
ES (1) | ES2060259T3 (de) |
Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5281333A (en) * | 1992-02-06 | 1994-01-25 | Ieg Industrie-Engineering Gmbh | Arrangement for cleaning ground water |
US5341877A (en) * | 1991-09-12 | 1994-08-30 | General Motors Corporation | Method and apparatus for in situ removal of a spilled fluid from the earth's subsurface |
US5385677A (en) * | 1993-04-30 | 1995-01-31 | Venable; William B. | Fiber optic photochemical oxidation decontamination of aqueous leachate plumes |
US5398757A (en) * | 1994-02-22 | 1995-03-21 | K N Energy, Inc. | Mono-well for soil sparging and soil vapor extraction |
US5400858A (en) * | 1993-09-13 | 1995-03-28 | International Technology Corporation | Groundwater recovery system |
US5402848A (en) * | 1994-04-07 | 1995-04-04 | Kelly; Leo G. | Method and apparatus for conducting environmental procedures |
US5577558A (en) * | 1995-10-16 | 1996-11-26 | General Motors Corporation | In-well device for in situ removal of underground contaminants |
US5588490A (en) * | 1995-05-31 | 1996-12-31 | Geraghty & Miller, Inc. | Method and system to achieve two dimensional air sparging |
US5622450A (en) * | 1995-03-24 | 1997-04-22 | Grant, Jr.; Richard P. | Pressure extraction process for removing soil and groundwater contaminants |
US5697437A (en) * | 1995-12-07 | 1997-12-16 | Lockheed Idaho Technologies Company | System for the removal of contaminant soil-gas vapors |
US5879108A (en) * | 1997-06-09 | 1999-03-09 | Eder Associates | Air sparging/soil vapor extraction apparatus |
US5928520A (en) * | 1997-07-16 | 1999-07-27 | Abanaki Corporation | Method and apparatus for extracting ground water contaiminants |
US6102623A (en) | 1997-05-19 | 2000-08-15 | Arcadis Geraghty & Miller, Inc. | In-well air stripping, oxidation, and adsorption |
US6116816A (en) | 1998-08-26 | 2000-09-12 | Arcadis Geraghty & Miller, Inc. | In situ reactive gate for groundwater remediation |
US6143177A (en) | 1995-04-11 | 2000-11-07 | Arcadis Geraghty & Miller, Inc. | Engineered in situ anaerobic reactive zones |
US20020162805A1 (en) * | 2001-02-27 | 2002-11-07 | Shenoi Noel A. | Removing contaminants from groundwater |
US6485229B1 (en) | 1997-10-10 | 2002-11-26 | Gunderboom, Inc. | Containment/exclusion boom and methods of using the same |
US20030089658A1 (en) * | 2001-11-02 | 2003-05-15 | Dreyer Harold B. | Filter canister, system containing filter canister, and their use |
US6567341B2 (en) | 2000-11-20 | 2003-05-20 | Gunderboom, Inc. | Boom system and its use to attenuate underwater sound or shock wave transmission |
US6660170B2 (en) | 2001-11-07 | 2003-12-09 | Gunderboom, Inc. | Containment/exclusion barrier system with infuser adaptation to water intake system |
US6739801B2 (en) | 2001-10-11 | 2004-05-25 | Gunderboom, Inc. | Boom curtain with zipper connections and method of assembling boom |
US6743367B2 (en) | 2001-10-29 | 2004-06-01 | Gunderboom, Inc. | Boom curtain with expandable pleated panels, containment boom containing the same, and use thereof |
US6857819B2 (en) | 2002-02-04 | 2005-02-22 | Gunderboom, Inc. | Attachment for use with stockpiling barge and method of filtering runoff water therefrom |
US20050056431A1 (en) * | 2003-09-11 | 2005-03-17 | R3 Pump Technologies, Llc | Method and system for directing fluid flow |
US7097767B2 (en) | 2001-06-05 | 2006-08-29 | Gunderboom, Inc. | Method of controlling contaminant flow into water reservoir |
US20080000819A1 (en) * | 2006-02-15 | 2008-01-03 | Liquid Separation Technologies And Equipment, Llc | Water decontamination systems |
US20080000821A1 (en) * | 2006-02-15 | 2008-01-03 | Liquid Separation Technologies And Equipment, Llc | Apparatus for water decontamination |
US20080000839A1 (en) * | 2006-02-15 | 2008-01-03 | Liquid Separation Technologies And Equipment, Llc | Methods of water decontamination |
US20090045141A1 (en) * | 2007-08-15 | 2009-02-19 | Drewelow David S | Apparatus for aeration of contaminated liquids |
US7641803B2 (en) | 2006-02-10 | 2010-01-05 | Gunderboom, Inc. | Filter cartridges for fluid intake systems |
CN109570209A (zh) * | 2018-12-27 | 2019-04-05 | 博川环境修复(北京)有限公司 | 一种用于修复污染地下水及其流经污染土壤的装置 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT409828B (de) * | 1992-03-03 | 2002-11-25 | Tech Buero Ing Reinhard Goesch | Anordnung zur geruchstabilisierung von deponien |
DE4217331A1 (de) * | 1992-05-26 | 1993-12-02 | Hannover Umwelttechnik Gmbh | Verfahren und Vorrichtung zum Absaugen leichtflüchtiger Kontaminanten aus gasdurchlässigem Material |
EP2969100B1 (de) | 2013-03-12 | 2018-06-13 | Rolls-Royce North American Technologies, Inc. | Deoxygenierung von flussigkeit mit gas |
WO2015162527A1 (en) | 2014-04-23 | 2015-10-29 | Universita' Degli Studi Di Roma "La Sapienza" | Process, arrangement and plant for the clean-up of waters contaminated by chlorinated solvents, nitrates and sulfates |
CN105821925A (zh) * | 2016-05-27 | 2016-08-03 | 谷神生物科技集团有限公司 | 一种深水井结构及其使用方法 |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU939675A1 (ru) * | 1980-11-05 | 1982-06-30 | Алма-Атинский Комплексный Отдел Казахского Научно-Исследовательского Института Водного Хозяйства | Водосборный колодец |
DE3625488A1 (de) * | 1986-04-22 | 1987-10-29 | Ieg Ind Engineering Gmbh | Anordnung zum austreiben leicht fluechtiger verunreinigungen aus fluessigkeiten |
US4821800A (en) * | 1986-12-10 | 1989-04-18 | Sherritt Gordon Mines Limited | Filtering media for controlling the flow of sand during oil well operations |
US4886119A (en) * | 1987-08-25 | 1989-12-12 | Ieg Industrie-Engineering Gmbh | Method of and arrangement for driving volatile impurities from ground |
US4943305A (en) * | 1988-06-23 | 1990-07-24 | Bruno Bernhardt | Aerating apparatus for expelling volatile impurities from ground water |
US4950394A (en) * | 1988-02-19 | 1990-08-21 | Ieg Industrie-Engineering Gmbh | Arrangement for driving out volatile impurities from ground water |
US5050676A (en) * | 1989-09-27 | 1991-09-24 | Xerox Corporation | Process for two phase vacuum extraction of soil contaminants |
US5076360A (en) * | 1989-09-27 | 1991-12-31 | Dames & Moore | Priming methods for vacuum extraction wells |
US5082053A (en) * | 1989-09-16 | 1992-01-21 | Ieg Industrie-Engineering Gmbh | Arrangement for cleaning contaminated ground water |
US5095975A (en) * | 1989-09-16 | 1992-03-17 | Ieg Industrie-Engineering Gmbh | Arrangement for driving volatile impurities from ground water |
US5111883A (en) * | 1990-05-24 | 1992-05-12 | Winsor Savery | Vacuum apparatus and process for in-situ removing underground liquids and vapors |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4593760A (en) * | 1984-01-04 | 1986-06-10 | The Upjohn Company | Removal of volatile contaminants from the vadose zone of contaminated ground |
FR2565576B1 (fr) * | 1984-06-06 | 1989-12-22 | Petroles Cie Francaise | Procede de desaeration d'eau |
DE3626145A1 (de) * | 1986-04-30 | 1987-11-12 | Ieg Ind Engineering Gmbh | Verfahren und anordnung zum austreiben leichtfluechtiger verunreinigungen aus dem erdreich |
DE3811962C1 (en) * | 1988-04-11 | 1989-02-16 | Ieg - Industrie-Engineering Gmbh, 7410 Reutlingen, De | Arrangement for expelling highly volatile impurities from ground water |
DE3910990C1 (de) * | 1989-04-05 | 1989-12-21 | Ieg - Industrie-Engineering Gmbh, 7410 Reutlingen, De |
-
1990
- 1990-08-29 DE DE4027304A patent/DE4027304C2/de not_active Expired - Fee Related
-
1991
- 1991-08-07 DE DE59103030T patent/DE59103030D1/de not_active Expired - Fee Related
- 1991-08-07 EP EP91113245A patent/EP0472967B1/de not_active Expired - Lifetime
- 1991-08-07 ES ES91113245T patent/ES2060259T3/es not_active Expired - Lifetime
- 1991-08-07 AT AT91113245T patent/ATE111786T1/de not_active IP Right Cessation
- 1991-08-15 US US07/746,101 patent/US5220958A/en not_active Expired - Fee Related
- 1991-08-26 CA CA002049870A patent/CA2049870C/en not_active Expired - Fee Related
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU939675A1 (ru) * | 1980-11-05 | 1982-06-30 | Алма-Атинский Комплексный Отдел Казахского Научно-Исследовательского Института Водного Хозяйства | Водосборный колодец |
DE3625488A1 (de) * | 1986-04-22 | 1987-10-29 | Ieg Ind Engineering Gmbh | Anordnung zum austreiben leicht fluechtiger verunreinigungen aus fluessigkeiten |
US4821800A (en) * | 1986-12-10 | 1989-04-18 | Sherritt Gordon Mines Limited | Filtering media for controlling the flow of sand during oil well operations |
US4886119A (en) * | 1987-08-25 | 1989-12-12 | Ieg Industrie-Engineering Gmbh | Method of and arrangement for driving volatile impurities from ground |
US4950394A (en) * | 1988-02-19 | 1990-08-21 | Ieg Industrie-Engineering Gmbh | Arrangement for driving out volatile impurities from ground water |
US4943305A (en) * | 1988-06-23 | 1990-07-24 | Bruno Bernhardt | Aerating apparatus for expelling volatile impurities from ground water |
US5082053A (en) * | 1989-09-16 | 1992-01-21 | Ieg Industrie-Engineering Gmbh | Arrangement for cleaning contaminated ground water |
US5095975A (en) * | 1989-09-16 | 1992-03-17 | Ieg Industrie-Engineering Gmbh | Arrangement for driving volatile impurities from ground water |
US5050676A (en) * | 1989-09-27 | 1991-09-24 | Xerox Corporation | Process for two phase vacuum extraction of soil contaminants |
US5076360A (en) * | 1989-09-27 | 1991-12-31 | Dames & Moore | Priming methods for vacuum extraction wells |
US5111883A (en) * | 1990-05-24 | 1992-05-12 | Winsor Savery | Vacuum apparatus and process for in-situ removing underground liquids and vapors |
Cited By (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5341877A (en) * | 1991-09-12 | 1994-08-30 | General Motors Corporation | Method and apparatus for in situ removal of a spilled fluid from the earth's subsurface |
US5281333A (en) * | 1992-02-06 | 1994-01-25 | Ieg Industrie-Engineering Gmbh | Arrangement for cleaning ground water |
US5385677A (en) * | 1993-04-30 | 1995-01-31 | Venable; William B. | Fiber optic photochemical oxidation decontamination of aqueous leachate plumes |
US5400858A (en) * | 1993-09-13 | 1995-03-28 | International Technology Corporation | Groundwater recovery system |
US5452765A (en) * | 1993-09-13 | 1995-09-26 | International Technology Corporation | Groundwater recovery system |
US5398757A (en) * | 1994-02-22 | 1995-03-21 | K N Energy, Inc. | Mono-well for soil sparging and soil vapor extraction |
US5402848A (en) * | 1994-04-07 | 1995-04-04 | Kelly; Leo G. | Method and apparatus for conducting environmental procedures |
US5622450A (en) * | 1995-03-24 | 1997-04-22 | Grant, Jr.; Richard P. | Pressure extraction process for removing soil and groundwater contaminants |
US6143177A (en) | 1995-04-11 | 2000-11-07 | Arcadis Geraghty & Miller, Inc. | Engineered in situ anaerobic reactive zones |
US6632364B1 (en) | 1995-04-11 | 2003-10-14 | Arcadis G & M | Engineered in situ anaerobic reactive zones |
US6322700B1 (en) | 1995-04-11 | 2001-11-27 | Arcadis Geraghty & Miller | Engineered in situ anaerobic reactive zones |
US5588490A (en) * | 1995-05-31 | 1996-12-31 | Geraghty & Miller, Inc. | Method and system to achieve two dimensional air sparging |
US5577558A (en) * | 1995-10-16 | 1996-11-26 | General Motors Corporation | In-well device for in situ removal of underground contaminants |
US5697437A (en) * | 1995-12-07 | 1997-12-16 | Lockheed Idaho Technologies Company | System for the removal of contaminant soil-gas vapors |
US6283674B1 (en) | 1997-05-19 | 2001-09-04 | Arcadis Geraghty & Miller | In-well air stripping, oxidation, and adsorption |
US6102623A (en) | 1997-05-19 | 2000-08-15 | Arcadis Geraghty & Miller, Inc. | In-well air stripping, oxidation, and adsorption |
US6254310B1 (en) | 1997-05-19 | 2001-07-03 | Arcadis Geraghty & Miller, Inc. | In-well air stripping and adsorption |
US5879108A (en) * | 1997-06-09 | 1999-03-09 | Eder Associates | Air sparging/soil vapor extraction apparatus |
US5928520A (en) * | 1997-07-16 | 1999-07-27 | Abanaki Corporation | Method and apparatus for extracting ground water contaiminants |
US6485229B1 (en) | 1997-10-10 | 2002-11-26 | Gunderboom, Inc. | Containment/exclusion boom and methods of using the same |
US6280118B1 (en) | 1998-08-26 | 2001-08-28 | Arcadis Geraghty & Miller, Inc. | In situ reactive gate |
US6116816A (en) | 1998-08-26 | 2000-09-12 | Arcadis Geraghty & Miller, Inc. | In situ reactive gate for groundwater remediation |
US6567341B2 (en) | 2000-11-20 | 2003-05-20 | Gunderboom, Inc. | Boom system and its use to attenuate underwater sound or shock wave transmission |
US20020162805A1 (en) * | 2001-02-27 | 2002-11-07 | Shenoi Noel A. | Removing contaminants from groundwater |
US7097767B2 (en) | 2001-06-05 | 2006-08-29 | Gunderboom, Inc. | Method of controlling contaminant flow into water reservoir |
US6739801B2 (en) | 2001-10-11 | 2004-05-25 | Gunderboom, Inc. | Boom curtain with zipper connections and method of assembling boom |
US6743367B2 (en) | 2001-10-29 | 2004-06-01 | Gunderboom, Inc. | Boom curtain with expandable pleated panels, containment boom containing the same, and use thereof |
US7338607B2 (en) | 2001-11-02 | 2008-03-04 | Gunderboom, Inc. | Filter canister, system containing filter canister, and their use |
US20030089658A1 (en) * | 2001-11-02 | 2003-05-15 | Dreyer Harold B. | Filter canister, system containing filter canister, and their use |
US6843924B2 (en) | 2001-11-07 | 2005-01-18 | Gunderboom, Inc. | Containment/exclusion barrier system with infuser adaptation to water intake system |
US6660170B2 (en) | 2001-11-07 | 2003-12-09 | Gunderboom, Inc. | Containment/exclusion barrier system with infuser adaptation to water intake system |
US20040112839A1 (en) * | 2001-11-07 | 2004-06-17 | Dreyer Harold B. | Containment/exclusion barrier system with infuser adaptation to water intake system |
US6857819B2 (en) | 2002-02-04 | 2005-02-22 | Gunderboom, Inc. | Attachment for use with stockpiling barge and method of filtering runoff water therefrom |
US20050056431A1 (en) * | 2003-09-11 | 2005-03-17 | R3 Pump Technologies, Llc | Method and system for directing fluid flow |
US7641803B2 (en) | 2006-02-10 | 2010-01-05 | Gunderboom, Inc. | Filter cartridges for fluid intake systems |
US20080000821A1 (en) * | 2006-02-15 | 2008-01-03 | Liquid Separation Technologies And Equipment, Llc | Apparatus for water decontamination |
US20080000839A1 (en) * | 2006-02-15 | 2008-01-03 | Liquid Separation Technologies And Equipment, Llc | Methods of water decontamination |
US20080000819A1 (en) * | 2006-02-15 | 2008-01-03 | Liquid Separation Technologies And Equipment, Llc | Water decontamination systems |
US20090045141A1 (en) * | 2007-08-15 | 2009-02-19 | Drewelow David S | Apparatus for aeration of contaminated liquids |
US8101089B2 (en) | 2007-08-15 | 2012-01-24 | Liquid Separation Technologies And Equipment, Llc | Apparatus for aeration of contaminated liquids |
US9079785B2 (en) | 2007-08-15 | 2015-07-14 | Liquid Separation Technologies And Equipment, Llc | Apparatus for aeration of contaminated liquids |
CN109570209A (zh) * | 2018-12-27 | 2019-04-05 | 博川环境修复(北京)有限公司 | 一种用于修复污染地下水及其流经污染土壤的装置 |
Also Published As
Publication number | Publication date |
---|---|
CA2049870C (en) | 1994-11-01 |
DE4027304C2 (de) | 1993-12-09 |
DE4027304A1 (de) | 1992-03-05 |
ATE111786T1 (de) | 1994-10-15 |
CA2049870A1 (en) | 1992-03-01 |
ES2060259T3 (es) | 1994-11-16 |
EP0472967A1 (de) | 1992-03-04 |
EP0472967B1 (de) | 1994-09-21 |
DE59103030D1 (de) | 1994-10-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FPAY | Fee payment |
Year of fee payment: 4 |
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